1/4 cup Colavita™ Extra-Virgin Olive Oil
1 large white onion, peeled and coarsely chopped
3 1/2 pounds cut-up bone-in chicken
1/4 cup white wine vinegar
4 fresh sage leaves, crumbled
2 sprigs fresh rosemary
1 cup dry white wine, such as Orvieto Classico
4 large plum tomatoes, pureed and sieved to remove skin and seeds
Fine sea salt to taste
Grinding coarse black pepper